Eaton PowerXL DA1 - All-Pole Sine Filters

6 Technical Data
6.12 All-pole sine filters
192 DA1 Variable Frequency Drives 11/16 MN04020005Z-EN www.eaton.com
6.12 All-pole sine filters
All-pole sine filters make it possible to reduce differential-mode and
common-mode interference at the variable frequency drive output when
using extremely long motor cable lengths. This makes it possible to eliminate
the bearing currents, caused by common-mode voltage, between the motor
windings’ neutral point and earth potential, extending the motor’s lifespan.
DX-SIN3-…-A all-pole sine filters also require being connected to DC+ (or +)
and DC- (or -) on the internal DC link in DA1 variable frequency drives.
They can be used
• For fixed switching frequencies  8 kHz (P2-24, double modulation)
• Output voltage U
2max
to 500 V,
• Rotating field frequencies (f
2
) of 0 to 60 Hz.
They make it possible to forego the use of screened motor cables.
￫
Please enquire for DX-SIN3-…-A all-pole sine filters for motor
currents of up to 180 A.
￫
DX-SIN3-…-A all-pole sine filters may only be operated with
fixed switching frequencies.
Accordingly, the switching frequency (P2-24) must be set to the
value set in parameter P6-02 (auto temperature management)
(P2-24 = P6-02).
Permissible switching frequencies for DA1 with DX-SIN3…:
1  8 kHz; 2 12 kHz
As a result of double modulation, the value set on the DA1
variable frequency drive will be twice the effective value on the
sine filter (1  8kHz
 4 kHz; 2  12 kHz  6 kHz).